Patent US2815518A successfully refreshed from Google Patents.
US2815518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water vehicle
Assignee: Individual
•
Filing: 1956-11-23
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Granted: 1957-12-10
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Expires: 1976-11-23
Abstract
No abstract record available.
Inventors
- 👤 Otto L Kuehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:21
CPC Classifications
B; B63; B63B; B63B32/00; B63B32/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735115A
Cited
US1444491A
Cited
US1835618A
Cited
US1846602A
Cited
US1976046A
Cited
US2713317A
Cited
US2751612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |